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Authors
Jia, Xuelian
Wang, Wenyi
Xu, Zhuobin
Wang, Shijing
Wang, Tong
Wang, Min
Wu, Min
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Article History
Received: 2 February 2016
Accepted: 27 May 2016
First Online: 15 June 2016
Competing interests
: The authors declare no competing financial interests.
